Dynamic decoding of communication between card reader and portable device |
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| 申请号 | EP13195098.2 | 申请日 | 2013-11-29 | 公开(公告)号 | EP2838203A3 | 公开(公告)日 | 2015-06-03 |
| 申请人 | iZettle Merchant Services AB; | 发明人 | Andersson, Fredrik; | ||||
| 摘要 | The proposed technology generally relates the field of data transmission, in particular it relates to decoding an encoded data signal received at an audio interface of a portable electronic device, wherein the encoded data signal is encoded with an encoding scheme having an adjustable encoder clock frequency. The proposed method comprises preprocessing S1 the received encoded data signal; scanning S2 the received encoded data signal for a known start sequence and when a known start sequence is successfully detected then calculating S3 an actual frequency based on the detected start sequence; interpreting S4, a data block succeeding the start sequence using the assessed actual frequency; and assessing S5 whether to request adjustment S5 of the adjustable encoder clock frequency based on the scanning S2 and/or the interpretation S4. The proposed technology relates to a method performed in a portable communications device well as a corresponding device and computer program. | ||||||
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| 说明书全文 | |||||||
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